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pbutils: Don't include default vp9 parameters in resulting codec mime string

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According to the document defining the vp9 codec string, the optional fields
should all be present only if at least one of them has a non-default value.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5719>
This commit is contained in:
Philippe Normand 2023-11-27 10:36:01 +00:00 committed by Tim-Philipp Müller
parent b299760325
commit 36f653fdc5
2 changed files with 34 additions and 6 deletions
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18
subprojects/gst-plugins-base/gst-libs/gst/pbutils/codec-utils.c
View file

@ -2471,7 +2471,8 @@ vp9_caps_get_mime_codec (GstCaps * caps)
GstStructure *caps_st;
const char *profile_str, *chroma_format_str, *colorimetry_str;
guint bitdepth_luma, bitdepth_chroma;
guint8 profile = -1, chroma_format = -1, level = -1;
guint8 profile = -1, chroma_format = -1, level = -1, color_primaries =
-1, color_transfer = -1, color_matrix = -1;
gboolean video_full_range;
GstVideoColorimetry cinfo = { 0, };
GString *codec_string;
@ -2539,11 +2540,16 @@ vp9_caps_get_mime_codec (GstCaps * caps)
goto done;
}
/* optional but all or nothing */
g_string_append_printf (codec_string, ".%02u.%02u.%02u.%02u.%02u",
chroma_format, gst_video_color_primaries_to_iso (cinfo.primaries),
gst_video_transfer_function_to_iso (cinfo.transfer),
gst_video_color_matrix_to_iso (cinfo.matrix), video_full_range);
/* optional but all or nothing. Include them if any parameter differs from the default value */
color_primaries = gst_video_color_primaries_to_iso (cinfo.primaries);
color_transfer = gst_video_transfer_function_to_iso (cinfo.transfer);
color_matrix = gst_video_color_matrix_to_iso (cinfo.matrix);
if (chroma_format != 1 || color_primaries != 1 || color_transfer != 1
|| color_matrix != 1 || video_full_range) {
g_string_append_printf (codec_string, ".%02u.%02u.%02u.%02u.%02u",
chroma_format, color_primaries, color_transfer, color_matrix,
video_full_range);
}
done:
return g_string_free (codec_string, FALSE);

22
subprojects/gst-plugins-base/tests/check/libs/pbutils.c
View file

@ -1495,6 +1495,28 @@ GST_START_TEST (test_pb_utils_caps_mime_codec)
g_free (mime_codec);
gst_caps_unref (caps);
/* vp9 with default chroma subsampling, color primaries, color transfer, color
* matrix and luma/chroma encoded in the "legal" range*/
caps =
gst_caps_from_string
("video/x-vp9, width=(int)640, height=(int)480, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)30/1, chroma-format=(string)4:2:0, bit-depth-luma=(uint)8, bit-depth-chroma=(uint)8, colorimetry=(string)bt709, alignment=(string)super-frame, profile=(string)0, codec-alpha=(boolean)false");
mime_codec = gst_codec_utils_caps_get_mime_codec (caps);
fail_unless_equals_string (mime_codec, "vp09.00.10.08");
g_free (mime_codec);
gst_caps_unref (caps);
/* vp9 with non-default chroma subsampling */
caps = gst_caps_from_string ("video/x-vp9, width=(int)640, height=(int)480, "
"pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)30/1, "
"chroma-format=(string)4:2:2, bit-depth-luma=(uint)8, "
"bit-depth-chroma=(uint)8, colorimetry=(string)bt709, "
"alignment=(string)super-frame, profile=(string)0, "
"codec-alpha=(boolean)false");
mime_codec = gst_codec_utils_caps_get_mime_codec (caps);
fail_unless_equals_string (mime_codec, "vp09.00.10.08.02.01.01.01.00");
g_free (mime_codec);
gst_caps_unref (caps);
/* mjpeg */
caps = gst_caps_new_empty_simple ("image/jpeg");
mime_codec = gst_codec_utils_caps_get_mime_codec (caps);